@aweiwei You must use Tencent TIM software, and I now do not use the Tencent official provided TIM which contains a lot of unnecessary function such as QQ protect. I always use the tencent software modified by zd423. And the TIM version now I'm using is 2.1.5(23129).

But for now, I cannot get any idea why it like this, there is no such problem on my two PCs.